ORIGINAL: captinjohn
Another test would be to just remove the switch and plug in direct. Run the engine and fly the airplane a few times too see what happens then. Silicone spray is good for switches. It prevents further corrsion also. Capt,n
+1 to plug in direct, and I would ditch the switch altogether.
On my 50cc, and anything I'll build like that in the future...no traditional switches period. A direct plug in with a powersafe receiver (JR name but I think there are others) and a soft switch is a bullet proof way to deliver power to the whole system. I'm surprised I dont hear more guys using them. That, combined with the A123 chemistry, I don't even bother with charge ports cut into the fuse. Fly 5 times and if you don't go home after 5 flights anyway, pull the canopy, safety check connections, pushrods, pull-pull, servos, charge A123's and fly 5 more times....done. I use a volt magic too just to keep an eye on voltage along the way as the led lights are visibly through the canopy.
Anyway, glad to see you found your problem...but please ditch the switch! Beautiful bird!
Have fun,
Tom